Set aside 1 teaspoon of the TABASCO® Chipotle Sauce. Combine remaining TABASCO® Chipotle Sauce with the wine, 2 tablespoons of the garlic, salt, and pepper in a bowl and mix well. Place steak, onion, and bell peppers in a large container and pour marinade over top, turning meat to coat well. Cover and refrigerate for 4 hours.
Combine sour cream, cilantro, remaining 1/2 tablespoon garlic, and reserved teaspoon TABASCO® Chipotle Sauce in a small bowl, stirring to blend well. Cover and chill at least 1 hour.
Drain marinade from meat and vegetables. Heat an oiled griddle or large skillet over medium-high heat. Cook peppers and onions until tender and cook steak to desired doneness.
Place onions and peppers in a bowl. Slice steak across grain and serve family-style with tortillas and sour cream sauce.
Makes 4 servings.